Improvement in feed mechanisms for sewing-machines



2 sheets-sheet 1.

E. BOUSGAY. Feed Meehan-ism for Sewing-Machines.

No. 220,052. Patented Sept. 30,1879.

W ITNESSES NVE NTR Wem:

N. PETERS, PHOTO LITHUGRAFHER 2 Sheets-Sheet 2'. YE. BOUSGAY.Feed-*Mechanism for Sewing-Machines.

No. 220,052. --Patented Sept. O, 1879. [im

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INVENTDH NPETERSI PkOTO-UTHDGRAPHER. WASHINGTON D C UNITED STATESPATENTOnt-ront ELOI BOUSCAY, OF NORWALK, OHIO, ASSIGNOR TO HIMSELF, M. D.WILLIAMS, AND N. S. C. PERKINS, OF SAME PLACE.

IMPROVEMENT IN FEED MECHANISMS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 220,052, datedSeptember 30, 1879 application filed May 2s, 1879.

To all 'whom it may concern:

Be it known that I, ELOI BOUsCAY, of Norwalk, in the county of Huron andState of Ohio, have invented certain new and useful Improvements in FeedMechanisms for Sewing- Machines; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable oth ers skilled in the art to which it pertains to make anduse 1t, reference being had to the accompanying drawings, which formpart of this specification.

My invention relates to sewin g-machine feed mechanisms; and consists inthe construction hereinafter described and claimed.

Referring to the drawings, Figure 1 is a. reverse perspective view ofthe bed-plate of a sewing-machine embodying my improvements. Fig. 2 is aview in side elevation of the same, with the bed-plate in section. Fig.3 is an end elevation, showing the feed-bar and connections. Fig. 4represents in two detail views the formation of the lower extremity ofthe main upright shaft and the engagement therewith of the rearextremity of the feed-operating lever.

The feed-operating lever A is provided at its rear extremity with thetwo lateral arms a, which embrace the eccentric b, formed on the mainupright shaft B. The lower extremity of this shaft is further providedwith a feed-cam, b1, which is adapted to engage a projection, b2, withwhich the rear extremity of the feedoperating lever is provided. Thelateral arms of this lever are in constant and unvarying engagement withtheir operating-eccentric, and thereby the lever is actuated in itsreciprocating longitudinal movement. The feed-cam engages the projectionwith which this lever is provided, and thereby said lever is actuated inits lateral vibration. As the rear extremity of said lever is adj ustedlaterally to or from the upright shaft, this projection is adapted toengage with a greater or less portion of said feed-cam, and the lateralvibrations of the lever are correspondingly varied. The forwardextremity of this lever A is made with the incline c on its uppersurface,which engages transversely with the feed-bar C as said vleverworks in the cross-grooved, formed in the lower for- .central portion ofthe bed-plate.

ward portion of said feed-bar. The lower rear portion of this feed-baris made with a longitudinal slot, f, which allows the bar to play onthehorizontal pivot g. Lugs or ears h, depending from the bed-plate,embrace the rear end of the feed-bar, and provide bearing for saidtransverse pivot- A spring, Z, is connected with the feed-bar, and theguideways m are also provided. The action or function of theseveral'parts is such as to cause the feed-bar to be actuatedlongitudinally in a combined horizontal and vertical movement under theoperation of lever A. This lever is provided at or near its middleportion with a longitudinal slot, n, into which projects a pin, stud, orits equivalent, D. This pin or stud serves as a fulcrum on which saidlever has pivotal movement in a horizontal plane. The adjusting devicewhich moves this fulcrum or pivot in a general line transverse to thefeed-operating lever consists of the feedadjusting lever E, whoseforward extremity is pivoted to the bed-plate, so that said adjusting-lever may be moved parallel with the latter.

Its rear extremity engages with the screwclamp F, which works in avertical transverse slot, p, formed in the bed-plate GL By means ot'this clamp the free end ot'- the feed-adjusting lever may be secured atdifferent points, so as to move the fulcrum D in a general line acrossthe bed-plate, or at right angles to the length of the feed-operatinglever A.

When a long stitch is to be sewed the clampscrew is thrown in toward themain upright shaft. This causes the fulcrum D to be moved in a generaldirection toward the longitudinal The rear end of the feed-operatinglever is thus adjusted nearer to the feed-cam, and thelatter is therebycaused to actuate said lever in a more extended movement. The throw ofthe feed-bar is correspondingly increased, and the desired length ofstitch is made. When a short stitch, however, is desired to be made, thescrewclamp is moved outwardly,and a result or operation the reverse ofthan just described takes place. It is apparent that by this means thestitch may be quickly and easily regulated, as desired.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, with an upright rotary shaft whose lower extremityis provided with a feed-cam and also with an independent eccentric, of afeed-operating lever whose rear extremity is provided with lateral armswhich embrace said eccentric, and is further provided with a projectionwhich engages with said feedcam, together with mechanism which isadapted to adjust the rear extremity of said Feed-operating lever to andfrom the upright shaft, substantially as set forth.

2. The combination, with an upright rotary shaft whose lower extremityis provided with a feed-cam and an independent eccentric, of afeedoperating lever whose rear extremity is provided with lateral armswhich embrace said eccentric, and is also provided with a projectionwhich engages with said feed-cam, together with a feed-adjusting leverconnected to said feed-operating lever, and adapted to move the rearextremity of the latter to and from said upright shaft, substantially asset forth.

3. The combination, with an upright rotary shaft Whose lower extremityhas a feed-cam and an independent eccentric, of n. feed-operating leverwhose rear extremity has lateral arms which embrace said eccentric,andis also provided with a projection which engages with said feed-cam,together with a feed-adjusting lever pivoted to the bed-plate and aclamp which secures it thereto in position, said two levers beingconnected to one another and adapted to be moved so that said projectionon the feed-operating lever engages with a greater or less portion ofsaid feed-cam, substantially as set forth.

4. The combinatiomwith an upright rotary shaft Whose lower extremity hasa feed-cam and an independent eccentric, of a feed-operat ing leverwhose rear extremity has lateral arms which embrace said eccentric, andis also provided with a projection which engages with said feed-cam,together with a feed-adjustin g lever connected to the feed-operatinglever and adapted to move the rear extremity of the seme to or from theupright shaft, the forward extremity of said feed-operating lever havingan inclined upper surface which engages with the feed bar, substantiallyas set forth.

In testimony that I claim the foregoing I have hereunto set my hand this13th day of May, 1879.

ELOI BOUSCAY. lVitnesses:

I. J. MAHON, S. N. PERKINS.

